Related by context. Frequent words. (Click for all words.) 50 Chris Nowinski 48 concussions 47 CSTE 44 Sean Morey 42 Steve Tisch 42 Traumatic Encephalopathy 41 Rich McKay 41 Guskiewicz 40 NFL 40 mild traumatic brain 39 Greg Aiello 39 Nowinski 39 quarterback Jay Fiedler 39 Dr. Ned Calonge 39 quarterback Tommy Maddox 39 chronic traumatic encephalopathy 39 Ditka 38 Joel Glazer 38 Lee Moak 38 Concussions 37 George Bodenheimer 37 commissioner Roger Goodell 37 cervical spine 37 commissioner Paul Tagliabue 37 Barry Alvarez 37 Goodell 37 Sen. Arlen Specter R-Pa. 37 Coach Jim Haslett 37 Dave Duerson 36 spine fractures 36 Wycheck 36 quarterback Peyton Manning 36 NFLPA 36 Commissioner Roger Goodell 36 linebacker Bradie James 36 coach Tony Dungy 36 Rob Brzezinski 36 Chrebet 36 Gridiron Greats 36 safety Corey Chavous 36 Commissioner Paul Tagliabue 36 Concussion 36 Lord Mawhinney 36 Mike Slive 35 wide receiver Muhsin Muhammad 35 AAOS 35 Gene Upshaw 35 coach Steve Mariucci 35 fullback Mike Alstott 35 Les Richter 35 Esiason 35 neuropsychological testing 35 MVP Peyton Manning 35 Korey Stringer 35 coach Joe Paterno 35 quarterback Brett Favre 35 orthopedists 35 Pittsburgh Steelers 35 concussion 35 linebacker Zack Follett 35 George Zoffinger 35 coach Bill Cowher 35 spokesman Bill Keenist 34 quarterback Troy Aikman 34 Roger Goodell 34 Tagliabue 34 TK Wetherell 34 linebacker Ernie Sims 34 Don Fehr 34 Bill Polian 34 Eric Winer 34 ACSM 34 Paul Tagliabue 34 Terry Hoeppner 34 owner Mario Lemieux 34 coach Dave Wannstedt 34 linebacker James Farrior 34 Brad Biggs 34 musculoskeletal 34 quarterback Joe Theismann 34 Gil Haskell 34 Quarterback Eli Manning 34 Mike Tice 34 Wellington Mara 34 Konstantin Kosachyov 34 Julio Grondona 34 Mike Hohensee 34 Theismann 34 Arnaud Lagardere 34 president Bill Polian 33 Craig Littlepage 33 Finchem 33 quarterback Gus Frerotte 33 QB Brett Favre 33 Joel Thorman 33 Jeffrey Lurie 33 Urlacher 33 Coach Rod Marinelli 33 National Athletic Trainers 33 coach Lovie Smith 33 Myles Brand